Locking device for revolving members



H. C. REAUX LOCKING DEVICE FOR REVOLVING MEMBERS Get. 30, 1934.

Filed July 21, 1933 fla wf C. Qawx 92 TTq 2 dbtozwaq Patented Oct. 30, 1934 1,979,651

imrrn stares harem" OFFICE LOCKING DEVICE FOR REVOLVING MEMBERS Herbert G. Reaux, Toledo, Ohio Application July 21, 1933, Serial No. 681,615

3 Claims. (01. 7050) My invention relates to locking devices for ro- I have selected a locking device for a revolving tative members in various predetermined posidoor embodying the invention as an example of tions. The invention particularly relates to a the various structures and details thereof that device having means movable with a rotative contain the invention and shall describe the se- .m mber and adapted to be engaged by a fixed lected structure hereinafter, it being understood member supported in an adjoining fixed art, that variations may be made without departing such as the supporting frame of the rotative memfrom the Spirit Of the invention- P ber. lar structure selected is shown in the accom- The invention particularly lends itself to use D y w 7 in connection with closures, such as a revolving 1 0f the drawing illustrates a Perspective 65 door, and providesa means for effectively lock- View Of the 0 Chosen fer p p of illustraing or unlocking a revolving door. tion. Fig. 2 illustrates a plan view of the lock The invention has for an obje t t provide a shown in Fig. 1. Fig. 3 illustrates an end view of revolving doorloek having means ied by th the circuit breaker used on the door lock chosen.

l5 door shaft adaptedto b engaged by an element Fig. 4 illustrates diagrammatically a top view of 70 supported in the door frame to lock the revolv- & revolving 61001 and Showing it in a locked- P ing door as against further movement relative tien- 5 illustrates diagrammatically the .to the frame. Another object of the in ti n electrical circuit which controls the operation of is to provide a revolving door lock having a conthe 100ktrolling means that may be operated at re- Heretofore, revolving door locks consisted of 7 mote point from the door. A further object of a k y p d belt which a s a a ma the invention is toprovide a revolving door lock located in the (1001 13911161 Suitable Sliding 0 designed to arrest the further movement of the 0 Ceiling hOltS- A revolving C1001 100k partaking door when the wings of the revolving door are 10- 0f the features of y invention has a frame 1 eated at substantially a angle to a horizonported, preferably, above the head panel of the tally extending line describing the center of the door casemen a hi n fr m n r l viewpassageway in which the door is located. In this he frame pp a discular member that is connection the invention provides a door lock keyed t0 the (1001 Supporting t. The d cuwhich, when applied to revolving doors, permits lar member has peripheral teeth or recesses which 30 the trapping of undesirable intruders and pilare adapted to be engaged by a latch bolt eleferers between the door casement and the wings ment. The bolt element is slidably Supported and provides a revolving door lock for buildings in the frame and biased toward a position of in whichbanks or depositories of wealth are kept. engagement with the discular member and its A particular object of the invention is to provide teeth. The bolt element is held in an unlocked 35 a toothed member operable on, and movable with, position by means of a magnetically operated dog the supporting shaft of the revolving'door, a that enga es the b and holds it a t the latch bolt slidably supported in a frame and bias. The bolt is withdrawn from a locked poadapted to engage the toothed member to prevent sition by means of an electromagnet and thus further movementof the toothed member and the locking and unlocking of the revolving door 40 the door, and electrical means for operating said may be accomplished at a remote point by means latch bolt. 7 i of a switch which completes an electrical cir- A still further particular object is to provide cuit through the coils of the electromagnets as a revolving door lock having means supported on desired. the door for automatically establishing a locked In the construction shown in the drawing,

-45 condition upon operation of the door through a a revolving door 1, having wing portions 9, is

predetermined angular movement. A still fursupported on a shaft 2 to which it is keyed, as ther object is to provide a revolving door lock of shown at 3. The shaft 2 extends through a head relatively low cost and high efficiency. panel 4 of the door casement and has a bearing The invention consists of other features and member 5 supported on a frame 6. The frame .50'advantages which will appear from the following 6 has leg portions 7 that are connected to the descriptions and upon examination of the drawpanel 4, as by the bolt, washer and nut assemirlg. Structures containing the invention may blies 8. partake of different forms and may be varied in In order to restrict the rotation of the door their details and still embody the invention. To 1 to but one direction, a toothed wheel or ratchet .55 illustrate a practical application of the invention, 10 is keyed to the shaft 2 and is adapted to be slidably engaged by the finger of a suitably biased pawl 11. The pawl 11 is pivotally supported, as at 12, on the frame 6 and is adapted to engage the ratchet 10 when the ratchet and the door are moved towards the pawl. If desired, the teeth 13 of the ratchet 10 may have cushion insets 14 afiixed, as by the bolts 15, to the leading faces of the teeth 13 and thus eliminates much of the noise incidental to rotating the ratchet '10 in contact with the pawl 11 during angular movements of the door. he revolved about its axis and on the shaft 2 in a direction leading away from the pawl 11.

Surmounting the ratchet 16 and keyed to the shaft 2 is a locking member 15. The member 15, preferably discular in shape, is adapted to rotate in a recess 16 formed in the frame 6 upon movement of the door 1. The member 15 has teeth 18 which are adapted to be engaged by a latch bolt 17. The latch bolt 17 is slidably supported in a way 22 formed in the frame 6 and is biased toward the member 15 by a suitable compression spring 19. The bolt 17 has a shoulder portion 20 that is engaged by a dog 21 when the bolt is in an open position relative to the member 15. The dog 21 holds the latch against the pressure of the spring 19 in an open position and when withdrawn from engagement with the shoulder portion 20; permits the bolt to move toward and engage one of the teeth 16 of the member 15, thus locking the door 1.

The dog 21 is operated to engage and disengage the shoulder portion 20 by a plunger 25 connected to a movable magnetic armature 26. The plunger 25 is supported for reciprocal movement in the frame 6 and is provided with a compression spring 27 which yieldingly resists movement of the plunger outwardly with respect to the frame 6. The armature 26 is located in an operable position with respect to an electromagnet 28. The electromagnet 28 has the usual related core 29 and coil 30. The coil 30 is connected to suitable source of electrical energy through a line 31, master switch 32, contacts 33, line 34, condenser 35, contact 36, circuit breaker 3'7, contact 38, line 39, coil 30, line 40, switch 41, and return line 42.

Thus, as illustrated diagrammatically in Fig. 5, when the switch 41 is closed, the coil 30 will be energized and the armature 26 drawn toward the electromagnet 28 against the tension of the spring 26 to disengage the dog 21 from the shoulder portion 20, permitting the bolt 17 to slide into engagement with the member 15 and engage one of the teeth 18, thus locking the door 1 against further movement.

In order that the circuit above described may be broken upon release of the latch bolt 17 by the dog 21 so as to re-establish the tumbler in position for unlocking, the circuit breaker 37 is 7 provided in circuit and operates automatically 45 supports the fixed contact 36 that is adapted to be engaged by the movable contact 38 slidably supported in the other terminal 46. The movable contact 38 has a shank portion 48 which ex- Thus, the door 1 may only tends through an opening formed in the terminal 46 and slidably fits an insulated bracket 49 affixed as by the bolts 50 to the armature 26. The shank 48 may be provided with limiting stops 51 and 52. A spring 53 is located on the shank 48 so as to bear against the stop 51 and the bracket 49 and operates to move the shank 48 and the contact 38 toward the fixed contact 36 to maintain the circuit closed upon release of the armature 26 from the influence of the magnet 28. The stop 52 is adapted to be engaged by the bracket 49 as the armature is moved toward the magnet 28. Thus, upon closure of the switch 41, the coil 30 is energized and the armature 26 drawn toward the electromagnet 28 against the tension of the spring 2'7 to withdraw the dog 21 from engagement with the shoulder 20. As the armature 26 approaches contact with the core 29, the bracket 49 engages the stop 52 to draw the contact 38 from contact with the fixed contact 36 breaking the circuit of the coil 30 upon the contact of the armature with the core. The circuit of the coil 30 being open, the compressed spring 27 exerts its influence to move the armature 26 together with the bracket 49 away from the core 29 and locates the dog 21 in a yieldingly pressing position against the side of the bolt and in a position for ready engagement of the shoulder 20 upon retraction of the bolt. As the armature is moved away from the core 29, the bracket 49 causes compression of the spring 53 which exerts itself on the stop 51 on the shank portion 48 and operates to move the contact 38 with increasing force towards and against the contact 36, insuring thereby a closure of the circuit through the breaker and its contacts. I

If desired, a switch 55, operable by the door 1 or its wings 9, may be provided and be connected in parallel circuit with the circuit of the breaker 37. The switch 55 has an operating shoe 56 that is pivotally supported, as at 57, to a bracket 58. The bracket 58 is supported on the frame 6. The shoe 56 is adapted to slidably engage the upper edges of the wings 9 of the door 1 and to be moved angularly about its pivot 57 as each wing 9 of the door 1 passes under, the shoe. The shoe 56 is connected to the switch 55 and operates to close the switch upon passage of the door wings under the shoe 56. The switch is connected by the line 60 to the contact 36 and by the line 61 to the line 39. Thus should the contacts 36 and 38 fail to close, a circuit may be completed through the contact 36, line 60, switch 55, line 61 and line 39 to energize the coil 30 for withdrawing the dog 21, as described, and effecting locking of the door.

In order to unlock the door 1, the latch bolt 17 must be withdrawn from engagement with the teeth 18'of the member 15. The latch bolt 17 is connected by a suitable stem 65 to a mov-.

able armature 66. The stem 65 is supported for reciprocal movement in the frame 6 and locates the armature 66 in operative relation with an electromagnet 68. The electromagnet 68 has a coil 69 and core '70. Thus, upon energization of the coil 69, the core '70 will exert a magnetic influence on the armature 66 to move the stem 65 and latch bolt 17 out of engagement with the teeth and to a position where the shoulder 20 of the bolt may be engaged by the dog 21, thereby unlocking the door 1.

The coil 69 is energized from a suitable source by the line 31, switch 32, contact '72, line '73, coil 69, line 74, contact 75, switch 32, and return. Thus, upon closure of the switch 32 with contacts 72 and 75, the bolt 17 will be withdrawn from locked position. If desired, a spring 78 may be located on the stem 65 of the latch bolt and undergoes compression during the withdrawal of the latch bolt and operates to move the latch bolt to locked position upon disengagement of the dog 21 with the latch bolt.

If desired, the facing portions of the cores 70 and 29 may be provided with cushion elements 80 which serve to eliminate the noise of contact between the cores and their respective armatures 66 and 26.

In operation, the door 1 is located in a passageway 81. The passageway 81 has arcuate casement walls 82 of a radius substantially that of the width of a wing 9. Assuming the door 1 to be open or free to revolve and it is desired to lock the door, the switch 41 is thrown, either manually or through an automatic alarm device, the dog 21 will be withdrawn from engagement with the bolt 1'7, and the door will be free to revolve to a position, as indicated in Fig. 4, forming a confining chamber 85 between the wings 9 and the casement 82 in which an individual, attempting to pass through the passageway, may be trapped and prevented from escaping. It will be appreciatedthat in the normal use of the door by ordinary traflic, the door will not be left in a position whereby locking thereof will be effected immediately with the operation of the switch. Consequently, a certain amount of free angular movement of the door will be permitted to allow the establishment of the trap as described. The opening of the door may be accomplished by throwing the switch 32 as described.

I claim:

1. A lock for a revolving door supported on and keyed to a shaft, a lock supporting frame having a recess and adapted to rotatably support the shaft, a discular member having a plurality of teeth disposed in said recess and adapted to be keyed to the shaft, the frame having a way communicating with the recess, a latch bolt slidably supported in said way and normally urged toward engagement with said teeth, magnetic means supported on the frame for retracting the latch bolt from said engagement, means for energizing said magnetic means, a second way formed in the frame communicating with the first named way, an element slidably supported in the said second way and urged toward said first named way whereby the latch bolt when in retracted position may be engaged by said element, a second magnetic means supported on the frame for retracting the tumbler element, and

means for energizing said second magnetic means including an element actuated upon rotation of the door.

2. A lock for a revolving door supported on and keyed to a shaft, a frame, the shaft journaled in the frame, a recess formed in the frame concentric with the said shaft, a disc having a plurality of teeth adapted to be keyed to the said shaft and disposed in said recess, a way formed in said frame and extending from one edge thereof to and communicating with said recess, a latch bolt slidably supported in said way and normally urged toward the said recess whereby the disc teeth will be engaged by the said latch bolt, magnetic means supported on the frame proximate to the way for moving the said latch bolt away from said recess, a controllable means for energizing said magnetic means, a second way extending at substantially right angles to the first named way and communicating therewith, an element slidably supported in said second way and normally urged to engage the said latch bolt, magnetic means supported on the frame adapted to move the element away from the latch bolt, and means for energizing said magnetic means including a trip element actuated by the door upon movement thereof.

3. A lock for a revolving door supported on and keyed to a shaft, a frame adapted to be supported in transverse relation to the axis of the shaft and having bearing portions for said shaft, the frame having a recess and a way extending from the recess to one edge of the frame, a disc keyed to the shaft and having a plurality of peripheral teeth, the disc disposed in the recess, a latch bolt slidably supported in said way, resilient means disposed within said way tending to move said latch bolt toward said recess whereby the disc may be engaged by said latch bolt, a magnetic means supported on the edge of the frame in proximity to the way for moving the latch bolt in opposition to said resilient means, means for energizing said magnetic means, a second way extending from a frame edge to and communicating with the first named way, a dog element slidably supported in said second way, resilient means disposed in said second way tending to move the dog element toward an engaging position with said latch bolt, a second magnetic means for moving the dog element in opposition to the sec- 

